Freehub problems

The freewheel on my rear hub has gone really sticky. Is there a way to fix this? It's a Shimano Deore cup and cone one.

If not, what options are there for affordable sealed bearing hubs, as I'm getting a bit fed up of cup and cone (call me lazy if you want), but I don't want to spend £150 on a rear hub for a commuter bike.

Just get a new freehub and swop it over. Tools needed are a pair of cone spanners and a large allen key and a blob of grease. To be honest shimano hubs are great in design, don't think that cartridge bearings are any better. I have changed 5 bearings in various bikes this weekend, as sealed maintenance free bearings they are not. Hope Goldtec etc, so not cheapies and oem bearings too.